GS2344 GS2510 GS2379 GS2436 1.2714 
 Classification of tool steel 



 2.1 Cold Work Die Steel 
 2.1.1 Low-alloy high-carbon cold-working die steel 
 9SiCr, 9CrWMn, CrWMn, Cr2, 9Cr2Mo, 7CrSiMnMoV, 8Cr2MnWMoVS, Cr2Mn2SiWMoV 
 2.1.2 Wear Cold Work Die Steel 
 6Cr4W3Mo2VNb, 6W6Mo5Cr4V, 7Cr7Mo3V2Si, Cr4W2MoV, Cr5Mo1V, Cr6WV, Cr12, Cr12MoV, Cr12W, Cr12Mo1V1 
 2.1.3 Shock Cold Work Die Steel 
 4CrW2Si, 5CrW2Si, 6CrW2Si 
 2.1.4 Carbon tool steel Cold Work Die 
 T7, T8, T9, T10, T11, T12 
 2.1.5 Cold mold with high-speed steel 
 W6Mo5Cr4V2, W12Mo3Cr4V3N, W18Cr4V, W9Mo3Cr4V 
 2.1.6 Non-magnetic steel mold 
 7Mn15Cr2Ae3V2Wmo, 1Cr18Ni9Ti 
 2.2 Hot work tool steel 
 2.2.1 Low-heat-resistant hot work die steel 
 5CrMnMo, 5CrNiMo, 4CrMnSiMoV, 5Cr2NiMoVSi 
 2.2.2 in the heat of hot work die steel 
 4Cr5MoSiV, 4Cr5MoSiV1, 4Cr5W2VSi, 8Cr3 
 2.2.3 High heat resistance hot work die steel 
 3Cr2W8V, 3Cr3Mo3W2V, 5Cr4Mo2W2VSi, 5Cr4Mo3SiMnVAe, 5Cr4W5Mo2V, 6Cr4Mo3Ni2WV 
 2.3 plastic mold steel 
 2.3.1 Carbon steel plastic mold 
 SM45, SM50, SM55 
 2.3.2 Pre-hardened plastic mold steel 
 3Cr2Mo, 3Cr2NiMnMo, 5CrNiMnMoVSCa, 40Cr, 42CrMo, 30CrMnSiNi2A 
 2.3.3 carburizing plastic mold steel 
 20Cr, 12CrNi3A 
 2.3.4 hardening plastic mold steel 
 O6Ni6CrMoVTiAe, INi3Mn2CuAeMo 
 2.3.5 corrosion resistant plastic mold steel 
 2Cr13, 4Cr13, 9Cr18, 9Cr18Mo, Cr14Mo4V, 1Cr17Ni2 
 Other: 
 In the plate (plate), there are many materials to be included in the tool steel series: 45 (45 #, 45), P20, S45C, S50C, and so on.